Secondary-battery plate or electrode



E. W. SMITH.

SECONDARY BATTERY PLATE 0R ELECTRODE. APPLlCATION fiLED SEPT. 4. i918.

1,370,058. Patented Mar. 1, 1921.

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ITZ'UR/YEY UNITED STATES, PATENT OFFICE.

EDWARD wAN'roN em, or PHILADELPHIA, rENNsii LvAmA,

snconna'nv-na'rmny PLATE on ELECTRODE.

f To all whom it may concern:

ends of said tubes.

' .Be it known that I, EDWARD WA'NTO}? inclosed in slotted hard rubber insulating.

tubes, and an end bar connecting said rods and provided with projections entering the In such plates or elements the slotted end portions of the tubes which received the projections on the connecting bar were weak and liable to fail and it was diflicult; or impossible to trim such slotted. ends accurately In order to get the tubes of uniform lengths.

The principal object of the present invention is to avoid those defects and disadvantages and to improve the end construction of those plates or electrodes.

The invention, will be claimed at the end hereof but will be first described in connection with the accompanying drawings form'- ing part hereof and in which- Figure 1 is a side elevation of part of a plate or e ectrode embodying features of the invention.

Fig. 2, is a 'plan view of the bottom of the same.-

' Fig. 3, ish. sectional view, drawn to an Specification of Letters Patent.

1; enlarged scale, and the invention, and

- come active and are w th 1m erforate cu s caving t e pro ections 4,-"and a surrounding Patented Mar. 1, 1921- Application filed September 4, 1918. Serial No. 252,568-

illustrating features of Figs. 4 and' '5, are respectively sections on the lines 4-4 and 5-5, of Fig. 3.

In the drawings 1, are metal rods surrounded by active inaterial or material adapted to become active 2, and 3'is anjend connecting bar connecting said rods and provided with projections 4. These are features or parts of well known plates or electrodes and they may be variously constructed. 5,

are slotted and ribbed tubes or envelops, as of rubber, or other suitable material, and therefore brittle, and they-surround the active.. material or material adapted to berovided at their ends or. xegztensions, 6, re

fitt "p the bar 3, as at 7. The wal saof are solid and the ends of thetubes are there-' fore stron and can be readily trimmed to leng h if esired.

1. In a storage batte including metal rodsfsurrounded with active material or material adapted to become active and an end bar-connecting said rods and provided with projections,- and incombinw' tion therewith, perforated tubes or envelope receiving descrlbed.

- '2. In a storagebattery plate aslotted tube v or envelop provided atits end with an imperforate cuif.

EDWARD'WANTON SMITH.

plate or electrode,

the active material and pro vided at their ends with imperforate cuffs" said projections, substantially as: 

